package com.itheima.controller;

import com.itheima.domian.SysLog;
import com.itheima.service.ISysLogService;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.User;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;

@Component
@Aspect
public class LogAop {

    @Autowired
    private HttpServletRequest request;

    @Autowired
    private ISysLogService isysLogService;

    private Date visitTime; //开始时间
    private Class clazz; //访问的类
    private Method method;//访问的方法

    //前置通知  主要是获取开始时间，执行的类是哪一个，执行的是哪一个方法
    @Before("execution(* com.itheima.controller.*.*(..))")
    public void doBefore(JoinPoint jp) throws Exception {
        visitTime = new Date();//当前时间就是开始访问的时间
        clazz = jp.getTarget().getClass(); //具体要访问的类
        String methodName = jp.getSignature().getName(); //获取访问的方法的名称
        Object[] args = jp.getArgs();//获取访问的方法的参数
        //获取具体执行的方法的Method对象
        if (args == null || args.length == 0) {
            method = clazz.getMethod(methodName); //只能获取无参数的方法
        } else {
            Class[] classArgs = new Class[args.length];
            for (int i = 0; i < args.length; i++) {
                classArgs[i] = args[i].getClass();
            }
            clazz.getMethod(methodName, classArgs);
        }
    }

    //后置通知
    @After("execution(* com.itheima.controller.*.*(..))")
    public void doAfter(JoinPoint jp) throws Exception {
        long time = new Date().getTime() - visitTime.getTime(); //获取访问的时长
        String url = "";
//        获取url
        if (clazz != null && method != null && clazz != LogAop.class) {
            //1.获取类上的@RequestMapping("/orders")
            RequestMapping classAnnotation = (RequestMapping) clazz.getAnnotation(RequestMapping.class);
            if (classAnnotation != null) {
                String[] classValue = classAnnotation.value();
                //2.获取方法上的@RequestMapping(xxx)
                RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
                if (methodAnnotation != null) {
                    String[] methodValue = methodAnnotation.value();
                    url = classValue[0] + methodValue[0];
                    //获取访问的ip
                    String ip = request.getRemoteAddr();
//        String ip = request.getRemoteAddr();
//                    String ip="127.0.0.1";
                    //获取当前操作的用户
                    SecurityContext context = SecurityContextHolder.getContext();//从上下文中获了当前登录的用户
                    User user = (User) context.getAuthentication().getPrincipal();
                    String username = user.getUsername();
                    //将日志相关信息封装到SysLog对象
                    SysLog sysLog = new SysLog();
                    sysLog.setExecutionTime(time); //执行时长
                    sysLog.setIp(ip);
                    sysLog.setMethod("[类名] " + clazz.getName() + "[方法名] " + method.getName());
                    sysLog.setUrl(url);
                    sysLog.setUsername(username);
                    sysLog.setVisitTime(visitTime);
                    //调用Service完成操作
                    isysLogService.save(sysLog);
                }
            }
        }
    }
}


//package com.itheima.controller;
//
//import com.itheima.domian.SysLog;
//import com.itheima.service.ISysLogService;
//import org.aspectj.lang.JoinPoint;
//import org.aspectj.lang.annotation.After;
//import org.aspectj.lang.annotation.Aspect;
//import org.aspectj.lang.annotation.Before;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.security.core.context.SecurityContext;
//import org.springframework.security.core.context.SecurityContextHolder;
//import org.springframework.security.core.userdetails.User;
//import org.springframework.stereotype.Component;
//import org.springframework.stereotype.Controller;
//import org.springframework.web.bind.annotation.RequestMapping;
//
//import javax.servlet.ServletRequest;
//import javax.servlet.http.HttpServletRequest;
//import java.lang.reflect.Method;
//import java.util.Date;
//
//@Component
//@Aspect
//public class LogAop {
//
//    @Autowired
//    private HttpServletRequest request;
//
//    @Autowired
//    private ISysLogService iSysLogService;
//
//    private Date visitTime;//访问开始时间
//    private Class clazz;//访问的类
//    private Method method;//访问的方法
//
//
//    //     前置通知,获取开始时间，执行的类是那一个，执行那一个方法
//    @Before("execution(* com.itheima.controller.*.*(..))")
//    public void doBefore(JoinPoint jp) throws Exception {
//        visitTime = new Date();//当前时间就是开始访问的时间
//        clazz = jp.getTarget().getClass();//具体访问的类;
//        String methodName = jp.getSignature().getName();//获取访问方法的名称
//        Object[] args = jp.getArgs();//获取访问的参数
////       获取具体执行method对象
//        if (args == null || args.length == 0) {
//            method = clazz.getMethod(methodName);//只能获取无参数的方法
//        } else {
//            Class[] classeArgs = new Class[args.length];
//            for (int i = 0; i < args.length; i++) {
//                classeArgs[i] = args[i].getClass();
//            }
//            clazz.getMethod(methodName, classeArgs);
//        }
//    }
//
//    //    后置通知
//    @After("execution(* com.itheima.controller.*.*(..))")
//    public void doAfter(JoinPoint jp) throws Exception {
//        long time = new Date().getTime() - visitTime.getTime();
//        String url = "";
////获取URL
//        if (clazz != null && method != null && clazz == LogAop.class) {
//            //获取类上的@RequestMapping
//            RequestMapping classAnnotation = (RequestMapping) clazz.getAnnotation(RequestMapping.class);
//            if (classAnnotation != null) {
//                String[] classValue = classAnnotation.value();
////    获取方法上的@RequestMapping
//                RequestMapping methodAnnotation = method.getAnnotation(RequestMapping.class);
//                if (methodAnnotation != null) {
//                    String[] methodValue = methodAnnotation.value();
//                    url = classValue[0] + methodValue[0];
//                }
//            }
//        }
//
////        获取访问的ip
//
//        String ip = request.getRemoteAddr();
//
////       获取当前操作的用户
//        SecurityContext context = SecurityContextHolder.getContext();
//        User user = (User) context.getAuthentication().getPrincipal();
//        String username = user.getUsername();
//
////        将日志相关信息封装到Syslog对象
//        SysLog sysLog = new SysLog();
//        sysLog.setExecutionTime(time);
//        sysLog.setIp(ip);
//        sysLog.setUrl(url);
//        sysLog.setVisitTime(visitTime);
//        sysLog.setMethod("类名：" + clazz.getName() + " 方法名：" + method.getName());
//        sysLog.setUsername(username);
//
////调用service完成操作
//        iSysLogService.save(sysLog);
//
//    }
//}
//
//
